Hybrid deicing system and method of operation

a hybrid deicing and aircraft technology, applied in the direction of cleaning process and apparatus, chemistry apparatus and processes, cleaning using liquids, etc., can solve the problems of significant economic and waste management problems for airline and airport operators, lack of cleaning capacity to dislodge and remove ice from aircraft wings, and high cost and toxicity of glycol, etc., to reduce glycol usage and deicing cycle time, reduce the effect of ice removal and ice removal efficiency and effectiveness

US7431240B1Inactive Publication Date: 2008-10-07PREMIER ENG & MFG
82 Cites 9 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
Publication Date
2008-10-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention overcome the disadvantage of the prior systems and produces a high velocity specially formed and constituted pressure aerodynamic stream for efficiently and effectively removing ice from an aircraft. The specially formed stream includes a stream within a stream, wherein a deicing fluid such a glycol is entrained within and encased by a surrounding jacket of entraining fluid such air. This deicing is now known as coaxial stream / stream within a stream deicing. The special nozzle allows the stream to maintain fluid separation over its flight path so that aircraft contact is made by to be known as coaxial stream / stream within a stream deicing. The coaxial stream / stream within a stream deicing is further enhanced by pressurizing the stream to deliver the stream as a high pressure high velocity stream to improved the aerodynamic sweeping action of the airstream.
Need to check novelty before this filing date? Find Prior Art

Description

RELATED APPLICATION

[0001] This application claims the benefit of and priority to earlier filed U.S. provisional application for a Glycol Air Deicing System Ser. No. 60 / 022,508 filed Jun. 17, 1996.FIELD OF INVENTION

[0002] This invention is related to system for deicing aircraft and more particularly to a glycol / air coaxial stream deicing system wherein glycol and forced air are applied as a specially formed glycol stream within a forced air stream. The special stream is charged to hydronamically dislodge and remove ice or other frozen deposits from the aircraft.BACKGROUND

[0003] Prior forced air deicing systems inject the glycol in an air stream air causing the glycol to atomized and dispersed in the air. Such streams lack the cleaning capacity to dislodge and remove ice from aircraft wings.

[0004] Conventional aircraft deicing systems consist of ground or truck mounted spray systems which apply hot (180° F.) deicing fluid (a mixture of glycol and water) at rates up to 60 gpm to the aircra...

Examples

Embodiment Construction

[0028]In FIG. 1, reference numeral 500 represents 400° F. air; 501 represents 50-200 mph. Referring now to FIG. 2, the new stand-alone ground based hybrid deicing system 10 of the present invention, (shown in detail in FIG. 7), utilizes a specially constructed coaxial nozzle assembly 20 that simultaneously delivers two independent, high velocity deicing streams. Preferably, a deicing fluid stream is encased within a high velocity airstream. The nozzle preferably has a special 0.060 inch diameter jetting orifice that produces a conical shaped jet. (in FIG. 2, reference numeral 400 represents heated deicing fluid from the triplex pump; 401 represents pressurized air from the centrifugal compressor (100 Lb per min); 402 represents 800 mph airstream; 403 represents 800 mph deicing fluid stream (high pressure / low flow mode); and 31 represents ASME “long radius” nozzle.)

[0029]The coaxial nozzle assembly 20 is specially designed to meld two fluid flow technologies, conversion of subsonic a...